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R8218/ShoulderCase/@Scapula/Scapula.m
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Scapula.m
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classdef (Abstract) Scapula < handle
%SCAPULA Summary of this class goes here
% This class defines the scapula. Landmarks are used to define its
% coordinate system. It includes the glenoid object.
properties
angulusInferior % Landmark Angulus Inferior read from amira
angulusInferiorLocal % Same as above, expressed the scapular coordinate system rather than the CT coordinate system
trigonumSpinae % Landmark Trigonum Spinae Scapulae (the midpoint of the triangular surface on the medial border of the scapula in line with the scaoular spine read from amira
processusCoracoideus % Landmark Processus Coracoideus (most lateral point) read from amira
acromioClavicular % Landmark Acromio-clavicular joint (most lateral part on acromion)read from amira
angulusAcromialis % Landmark Angulus Acromialis (most laterodorsal point) read from amira
spinoGlenoidNotch % Landmark Spino-glenoid notch read from amira
pillar % 5 landmarks on the pillar
groove % 5 landmarks on the scapula (supraspinatus) groove
coordSys % Scapular coordinate system
plane % Plane class
segmentation % either none 'N', manual 'M' or automatic 'A'
surface % surface points and triangles of the scapula
glenoid % Glenoid class
acromion % Acromion class
comment % any comment
end
properties (Hidden = true)
shoulder
end
methods (Abstract)
load(obj);
createGlenoid(obj);
end
methods (Access = protected) %Only Shoulder is allowed to construct a Scapula
function obj = Scapula(shoulder)
%SCAPULA Construct an instance of this class
% Constructor of the scapula object, sets all properties to
% zero.
obj.shoulder = shoulder;
obj.angulusInferior = [];
obj.angulusInferiorLocal = [];
obj.trigonumSpinae = [];
obj.processusCoracoideus = [];
obj.acromioClavicular = [];
obj.angulusAcromialis = [];
obj.spinoGlenoidNotch = [];
obj.pillar = [];
obj.groove = [];
obj.coordSys = CoordinateSystem;
obj.plane = Plane();
obj.segmentation = 'N';
obj.surface = [];
obj.createGlenoid;
obj.acromion = Acromion(obj);
obj.acromion.scapula = obj;
obj.comment = '';
end
end
methods
function output = coordSysSet(obj)
try
% Choose your method with the next command
obj.coordSys.setSystemWithScapulaLandmarks(obj);
% obj.coordSys.setSystemWith;
catch
output = 0;
end
% To enable retro compatibility with scapula.coordSysSet former
% implementation, the two following commands are called here
obj.setShoulderSideWithCoordinateSystem;
obj.angulusInferiorLocal = obj.coordSys.express(obj.angulusInferior);
output = 1;
end
function measurePlane(obj)
% Scapular plane is fitted on 3 points (angulusInferior,
% trigonumSpinae, most laretal scapular goove landmark).
inferior = obj.angulusInferior;
medial = obj.trigonumSpinae;
mostLateralGrooveIndex = findLongest3DVector(medial-obj.groove);
mostLateralGroovePoint = obj.groove(mostLateralGrooveIndex(1),:);
obj.plane.fit([inferior; medial; mostLateralGroovePoint]);
anterior = obj.processusCoracoideus;
posterior = obj.angulusAcromialis;
obj.plane.normal = orientVectorToward(obj.plane.normal,(anterior-posterior));
end
function setShoulderSideWithCoordinateSystem(obj)
% The scapula coordinate system is right-handed for the right shoulder only
if obj.coordSys.isRightHanded
obj.shoulder.side = 'R';
return
elseif obj.coordSys.isLeftHanded
obj.shoulder.side = 'L';
return
end
warning(['Couldn''t find the shoulder side by evaluating the scapula',...
'coordinate system.']);
end
end
end
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